I’ve been wanting to experiment with making a theme completely from scratch, and with gganimation animated plots, so this is the result.
Growing up with a twin brother, I heard our names said together more often than I heard either said individually. There was frequent debate over whose name ought to be said first in the sequence. While Liam is by far the more popular name in recent history, we can clearly see that Hans precedes Liam by about 50 years (at least in this data). That seems like good enough evidence to me.

CODE

#LIBRARIES
library(pacman) #package management
p_load(tidyverse, tidytuesdayR, extrafont, ggthemes)  #for datacleaning, extracting dataset, & aesthetics
p_load(gganimate, magick) #for animation


#LOAD DATA
babynames = tidytuesdayR::tt_load(2022, week = 12)$babynames
# glimpse data - lots of names!
glimpse(babynames)
## Rows: 1,924,665
## Columns: 5
## $ year <dbl> 1880, 1880, 1880, 1880, 1880, 1880, 1880, 1880, 1880, 1880, 1880,~
## $ sex  <chr> "F", "F", "F", "F", "F", "F", "F", "F", "F", "F", "F", "F", "F", ~
## $ name <chr> "Mary", "Anna", "Emma", "Elizabeth", "Minnie", "Margaret", "Ida",~
## $ n    <dbl> 7065, 2604, 2003, 1939, 1746, 1578, 1472, 1414, 1320, 1288, 1258,~
## $ prop <dbl> 0.07238359, 0.02667896, 0.02052149, 0.01986579, 0.01788843, 0.016~
#quickly view number of names per year
babynames %>% group_by(year) %>%
  summarise(count = n()) %>%
  ggplot(aes(x = year, y = count)) + 
  geom_point() + geom_line() +
  labs(title = "How many names are accounted for each year?") +
  ggthemes::theme_fivethirtyeight()

##MAKING ANIMATED TIME SERIES
#load in extra fonts
extrafont::loadfonts(device = "win")  #(need to run extrafont::install_fonts() if first time using) extrafont library

# Animated time series
anim_p1 = babynames %>% 
  #filter names
  filter((name == 'Hans' | name == 'Liam') & sex == 'M') %>%
    #ggplot
    ggplot(aes(x = year, y = prop, color = name)) + 
      geom_point(alpha = 0.5, size = 0.8) + geom_line() +
      labs(title = 'Liam & Hans throughout history', 
           color = '',
           x = 'year', y = 'proportion of all babynames',
           caption = "By Hans Elliott (Twin = Liam Elliott) \n
                      Data: TidyTuesday Baby Names (2022-03-22)"
           ) +
      scale_x_continuous(breaks = seq(1880, 2017, by = 8)) +
      scale_color_manual(values = c("darkred", "blue4")) +
      #build custom theme
      theme(
        panel.background = 
          element_rect(fill = "#afddc1", color = "gray99"),
        panel.grid.major = element_line(color = "honeydew2"),
        panel.grid.minor = element_line(color = "honeydew2"),
        plot.background = element_rect(fill = "honeydew2"),
        plot.title = element_text(family = "Felix Titling", color = "darkseagreen4"),
        axis.title.x = element_text(family = "Felix Titling", size = 11, color = "darkseagreen4"),
        axis.title.y = element_text(family = "Felix Titling", size = 11, color = "darkseagreen4", vjust = 2),
        axis.text = element_text(family = "Felix Titling", size = 9, color = "darkseagreen4"),
        legend.background = element_rect(fill = "honeydew2"),
        legend.key = element_rect(fill = "honeydew2"),
        legend.text = element_text(family = "Felix Titling", color = "darkseagreen4", size = 10),
        legend.position = "bottom",
        plot.margin = margin(t=0.5,r=1,l=1,b=0.2, "cm"),
        plot.caption.position = "plot",
        plot.caption = element_text(family = "Felix Titling", size = 11, color = "darkseagreen4")
      ) +
      #add animation components from gganimate
      transition_reveal(along = year) +
      view_follow(fixed_x = T)

  
#Uncomment following lines to preview animation
#animate(anim_p1, height = 800, width = 1000,  #animate & define dimensions
#        end_pause = 50)                       #repeats first/last frame n times

#Save animation as .gif
magick::image_write(
  animate(anim_p1, width = 1000, height = 1000, end_pause = 50), #specify dims, end_pause
  "hansliam_timeseries.gif"
)
 

Hans Elliott

hanselliott61@gmail.com